mirror of https://github.com/k3s-io/k3s.git
68 lines
2.5 KiB
Go
68 lines
2.5 KiB
Go
//go:build linux
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// +build linux
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package containerd
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import (
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"errors"
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"io/fs"
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"path/filepath"
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"github.com/k3s-io/k3s/pkg/agent/templates"
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"github.com/sirupsen/logrus"
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)
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// findNvidiaContainerRuntimes returns a list of nvidia container runtimes that
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// are available on the system. It checks install locations used by the nvidia
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// gpu operator and by system package managers. The gpu operator installation
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// takes precedence over the system package manager installation.
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// The given fs.FS should represent the filesystem root directory to search in.
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func findNvidiaContainerRuntimes(root fs.FS) map[string]templates.ContainerdRuntimeConfig {
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// Check these locations in order. The GPU operator's installation should
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// take precedence over the package manager's installation.
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locationsToCheck := []string{
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"usr/local/nvidia/toolkit", // Path when installing via GPU Operator
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"usr/bin", // Path when installing via package manager
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}
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// Fill in the binary location with just the name of the binary,
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// and check against each of the possible locations. If a match is found,
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// set the location to the full path.
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potentialRuntimes := map[string]templates.ContainerdRuntimeConfig{
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"nvidia": {
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RuntimeType: "io.containerd.runc.v2",
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BinaryName: "nvidia-container-runtime",
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},
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"nvidia-experimental": {
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RuntimeType: "io.containerd.runc.v2",
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BinaryName: "nvidia-container-runtime-experimental",
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},
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}
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foundRuntimes := map[string]templates.ContainerdRuntimeConfig{}
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RUNTIME:
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for runtimeName, runtimeConfig := range potentialRuntimes {
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for _, location := range locationsToCheck {
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binaryPath := filepath.Join(location, runtimeConfig.BinaryName)
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logrus.Debugf("Searching for %s container runtime at /%s", runtimeName, binaryPath)
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if info, err := fs.Stat(root, binaryPath); err == nil {
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if info.IsDir() {
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logrus.Debugf("Found %s container runtime at /%s, but it is a directory. Skipping.", runtimeName, binaryPath)
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continue
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}
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runtimeConfig.BinaryName = filepath.Join("/", binaryPath)
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logrus.Infof("Found %s container runtime at %s", runtimeName, runtimeConfig.BinaryName)
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foundRuntimes[runtimeName] = runtimeConfig
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// Skip to the next runtime to enforce precedence.
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continue RUNTIME
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} else {
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if errors.Is(err, fs.ErrNotExist) {
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logrus.Debugf("%s container runtime not found at /%s", runtimeName, binaryPath)
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} else {
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logrus.Errorf("Error searching for %s container runtime at /%s: %v", runtimeName, binaryPath, err)
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}
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}
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}
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}
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return foundRuntimes
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}
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